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中国化学快报:英文版 2023年第9期34卷 183-187页

作者： Haining Zhang Chaojun He limin shen Wenjun Tao Jianhui Zhu Jinzhao Song Ziyong Li Jun Yin Luoyang Key Laboratory of Organic Functional Molecules College of Food and DrugLuoyang Normal UniversityLuoyang 471934China Key Laboratory of Pesticide and Chemical Biology Ministry of EducationHubei International Scientific and Technological Cooperation Base of Pesticide and Green SynthesisInternational Joint Research Center for Intelligent Biosensing Technology and HealthCollege of ChemistryCentral China Normal UniversityWuhan 430079China

An amphiphilic AIE photosensitizer has been successfully developed,which allows for easily inserting into the bacterial membranes.Binding experiments with phospholipid preliminary demonstrates its membrane specificity.As expected,it is proved to possess a broad-spectrum bacterial staining performance and photodynamic antibacterial activity toward S.aureus and E.coli.

关键词： Photodynamic therapy Aggregation-induced emission Photosensitizer Membrane-targeting Singlet oxygen Broad-spectrum Bacteria imaging

Certificateless designated verifier proxy signature scheme for unmanned aerial vehicle networks

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Science China(Information Sciences) 2021年第1期64卷 79-93页

作者： Lei HE Jianfeng MA limin shen Dawei WEI School of Computer Science and Technology Xidian University School of Computer and Communication Engineering Zhengzhou University of Light Industry School of Cyber Engineering Xidian University School of Computer Science and Technology Nanjing Normal University

Unmanned aerial vehicle(UAV) technologies have a promising application prospect. It is necessary to use digital signature schemes to protect the integrity and authentication of messages in the UAV networks. According to the characteristics of UAV networks, digital signature schemes should solve the problems of digital certificate management and key escrow, guarantee the real-time performance of UAV executing commands, and ensure that only the designated verifier can verify the signature. Therefore, we proposed a certificateless designated verifier proxy signature(CLDVPS) scheme which meets the requirements. We proved our signature scheme is existentially unforgeable under an adaptive chosen message attack in the random oracle model and compared the efficiency of our signature scheme with other signature schemes.We implemented these signature schemes in jPBC to obtain the computing time and theoretically analyzed signature length of these signature schemes. The analysis results indicate that our CLDVPS scheme is more efficient than most of other related signature schemes on computation costs and also efficient on communication costs.

关键词： certificateless designated verifier proxy digital signature unmanned aerial vehicle

Damage prediction of HP40Nb steel with coupled creep and carburization based on the continuum damage mechanics

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Acta Metallurgica Sinica(English Letters) 2012年第4期25卷 279-286页

作者： limin shen Jianming GONG Yong JIANG Luyang GENG College of Mechanical and Power Engineering Nanjing University of TechnologyNanjing 210009China

HP40Nb steel, used as a candidate material for ethylene cracking furnace tube, suffers creep and carburization damage from the complex environment of high temperature, high carbon potential and low oxygen partial pressure, and they lead to failure of the furnace tubes ahead of designed life. In order to investigate damage evolution under the complex condition, coupled creep damage and carburization damage constitutive equations were developed according to continuum damage mechanics theory. Based on the finite element ABAQUS code, user subroutines were developed for analyz- ing damage evolution of ethylene furnace tube under the action of coupled creep- carburization. The results show that carburization accelerates the damage process dramatically, damage value reaches the critical value along the inner surface after serving for 75,000 h under the action of creep-carburization, meanwhile the damage value is only 0.53 along the outer surface after operating the same time under the action of creep alone, which means that microcracks are generated along the inner surface under the action of coupled creep-carburization, fracture begins along the outer surface of tube under the action of creep alone.

关键词： Damage prediction HP40Nb Coupled creep-carburizationEthylene furnace tube

Communication-Based Attacks Detection in Android Applications

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Tsinghua Science and Technology 2019年第5期24卷 596-614页

作者： Chuan Ma Tao Wang limin shen Dongkui Liang Shuping Chen Dianlong You School of In formation Science and Engineering Yanshan University the Key Laboratory for Computer Virtual Technology and System Integration of Hebei Province Qinhuangdao 066004 China School of Business Ad mi nisliatiom Hebei Normal University of Science and Technology. Qinhuangdao 066004 China Library of Yanshan University. Yanshan University Qinhuangdao 066004 China

The Android operating system provides a rich Inter-Component Communication(ICC) method that brings enormous convenience. However, the Android ICC also increases security risks. To address this problem, a formal method is proposed to model and detect inter-component communication behavior in Android applications. Firstly,we generate data flow graphs and data facts for each component through component-level data flow analysis.Secondly, our approach treats ICC just like method calls. After analyzing the fields and data dependencies of the intent, we identify the ICC caller and callee, track the data flow between them, and construct the ICC model. Thirdly,the behavior model of Android applications is constructed by a formal mapping method for component data flow graph based on Pi calculus. The runtime sensitive path trigger detection algorithm is then given. Communicationbased attacks are detected by analyzing intent abnormity. Finally, we analyze the modeling and detection efficiency,and compare it with relevant methods. Analysis of 57 real-world applications partly verifies the effectiveness of the proposed method.

关键词： Android inter-component communication intents component hijacking attack detection

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车载网中高效安全的无证书聚合签名方案

信息网络安全 2024年第2期24卷 188-202页

作者：顾妍妍沈丽敏高晨旭朱婷南京师范大学计算机与电子信息学院南京210023

为了保障车载网系统中车辆间通信的完整性、真实性、有效性和即时性,文章提出了一种能抗合谋攻击且不需要双线性对的无证书聚合签名方案。无证书密码体制既较好地解决了基于身份的密码体制所固有的密钥托管问题,又保留了基于身份的密码... 详细信息

为了保障车载网系统中车辆间通信的完整性、真实性、有效性和即时性,文章提出了一种能抗合谋攻击且不需要双线性对的无证书聚合签名方案。无证书密码体制既较好地解决了基于身份的密码体制所固有的密钥托管问题,又保留了基于身份的密码体制不需要使用公钥证书的优点。文章基于椭圆曲线离散对数问题和分叉引理,在随机预言模型中严格证明了其安全性。性能及效率分析表明,该方案是有效的,在保证通讯数据完整性和真实性的同时,减少了带宽开销以及存储开销,提高了验证效率。

关键词：聚合签名合谋攻击无证书密码体制车载网

碳化钨复合涂层的制备技术及其耐磨耐蚀性的研究进展

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腐蚀与防护 2024年第4期45卷 46-53页

作者：陈志聪黄超刘威沈利民中国矿业大学化工学院徐州221116 国家煤加工与洁净化工程技术研究中心徐州221116

碳化钨涂层具有化学稳定性高、硬度大和耐磨性好等特点,常用于金属表面涂层的制备。从碳化钨涂层的不同制备原理出发,综述了超声速火焰喷涂、等离子喷涂、等离子熔覆、激光熔覆和真空熔覆等碳化钨涂层制备技术的国内外研究进展,分析了... 详细信息

碳化钨涂层具有化学稳定性高、硬度大和耐磨性好等特点,常用于金属表面涂层的制备。从碳化钨涂层的不同制备原理出发,综述了超声速火焰喷涂、等离子喷涂、等离子熔覆、激光熔覆和真空熔覆等碳化钨涂层制备技术的国内外研究进展,分析了不同制备技术下涂层的耐磨性和耐蚀性,探讨了涂层制备技术存在的问题和未来的研究方向。

关键词：碳化钨涂层超声速火焰喷涂等离子喷涂等离子熔覆激光熔覆真空熔覆

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基于5G和物联网城市路灯智能控制系统研究

中国照明电器 2024年第3期 1-4页

作者：申利民蒋应龙广州铁路职业技术学院广东广州510430 中认英泰检测技术有限公司江苏苏州215000

针对当前城市路灯控制存在浪费严重、运维困难等问题,提出了利用物联网、云计算、5G通信等技术构建城市路灯控制系统,介绍了系统控制方案、系统框图结构、软件分层结构、信号处理流程等。方案将城市按片区划分,在片区区域内实现支路路灯... 详细信息

针对当前城市路灯控制存在浪费严重、运维困难等问题,提出了利用物联网、云计算、5G通信等技术构建城市路灯控制系统,介绍了系统控制方案、系统框图结构、软件分层结构、信号处理流程等。方案将城市按片区划分,在片区区域内实现支路路灯的LoRa一次组网,片区间实现LoRa二次组网,LoRa传输的有效路灯数据通过5G网传输到云平台处理,具有智能化程度高,可维护性好的特点。

关键词：物联网 5G 边缘计算模糊控制

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基于微卫星的欧亚水獭个体识别和遗传多样性

兽类学报 2024年第2期44卷 146-158页

作者：郑凯丹汪巧云范朋飞韩雪松肖梅谌利民董正一张璐中山大学生命科学学院广州510275 中山大学水产动物疫病防控与健康养殖全国重点实验室广州510275 山水自然保护中心北京100871 北京大学生命科学学院自然保护与社会发展研究中心北京100871 四川省唐家河国家级自然保护区管理处广元628109 中山大学生态学院深圳518107

种群数量和遗传多样性是保护濒危物种所需的基础信息。欧亚水獭(Lutra lutra)属于国家二级保护动物,曾经在我国分布广泛,但在20世纪经历了大规模的种群数量下降和分布区缩减。欧亚水獭相关研究十分缺乏,种群数量调查和遗传多样性等基础... 详细信息

种群数量和遗传多样性是保护濒危物种所需的基础信息。欧亚水獭(Lutra lutra)属于国家二级保护动物,曾经在我国分布广泛,但在20世纪经历了大规模的种群数量下降和分布区缩减。欧亚水獭相关研究十分缺乏,种群数量调查和遗传多样性等基础研究亟待开展。本研究采用非损伤性取样法,于2019—2020年在青海省玉树藏族自治州玉树市和四川省广元市青川县的主要河流共采集270个欧亚水獭粪便样品并进行DNA提取,基于9个微卫星位点和SRY基因分子标记进行个体识别和性别鉴定,进而使用非损伤性标志重捕法Capwire估计两地水獭的种群数量,并基于微卫星分型数据评估两个种群的遗传多样性。最终共有67个粪便样品(24.8%)成功分型7~9个微卫星位点并用于个体识别,共识别出玉树市10个个体、青川县30个个体,雌雄性比分别为4:5、15:14,两地各有1个个体未成功鉴定性别。估计研究区域内玉树的水獭种群数量为13只(95%置信区间:7~21只)、青川县的水獭种群数量为75只(95%置信区间:59~133只)。玉树、青川种群的平均观测杂合度H_(O)分别为0.680、0.664,平均期望杂合度HE分别为0.611、0.658,表明两个水獭种群均具有中等的微卫星遗传多样性。玉树、青川种群的平均F_(ST)为0.238,平均近亲繁殖系数F_(IS)分别为-0.121、-0.010,表明两个水獭种群之间分化显著,且种群内近交程度低。本研究是我国大陆地区基于粪便DNA对欧亚水獭进行种群数量估计和遗传多样性评估,可为我国水獭的保护提供重要的基础信息。

关键词：欧亚水獭粪便DNA 微卫星种群数量遗传多样性

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脓毒症心肌病的研究进展

中国医师杂志 2024年第5期26卷 789-792页

作者：张晓航申丽旻李丹丹河北医科大学研究生院石家庄050000 河北省人民医院重症医学科石家庄050051

脓毒症心肌病是脓毒症的常见并发症之一,是一种可逆的心肌功能障碍,主要表现为左心室扩张和射血分数降低,通常在7~10 d内恢复。脓毒症心肌病可能因诊断不及时或治疗不规范,导致患者的病死率增高。本文总结了近年来专家学者对脓毒症心肌... 详细信息

脓毒症心肌病是脓毒症的常见并发症之一,是一种可逆的心肌功能障碍,主要表现为左心室扩张和射血分数降低,通常在7~10 d内恢复。脓毒症心肌病可能因诊断不及时或治疗不规范,导致患者的病死率增高。本文总结了近年来专家学者对脓毒症心肌病新的认知,包括定义、临床表现、发病机制、诊断、治疗等内容,以期为临床上脓毒症心肌病的诊治提供一些思路。

关键词：脓毒症心肌疾病

A universal multifunctional dual cation doping strategy towards stabilized ultra-high nickel cobalt-free lithium layered oxide cathode

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Journal of Energy Chemistry 2024年第8期95卷 296-305页

作者： Yabin shen Dongming Yin limin Wang Gang Huang Yong Cheng Henan Institute of Advanced Technology Zhengzhou University State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences

Ultra-high nickel cobalt-free lithium layered oxides are promising cathode material for lithium-ion batteries（LIBs） because of their relatively high capacity and low cost.Nevertheless,the high nickel content would induce bulk structure degradation and interfacial environment deterioration,and the absence of Co element reduces the lithium diffusion kinetics,severely limiting the performance liberation of this kind of cathodes.Herein,a multifunctional Ti/Zr dual cation co-doping strategy has been employed to improve the lithium storage performance of LiNi0.9Mn0.1O2（NM91） cathode.On the one hand,the Ti/Zr co-doping weakens the Li+/Ni2+mixing through magnetic interactions due to the inexistence of unpaired electrons for Ti4+and Zr4+,increasing the lithium diffusion rate and suppressing the harmful coexistence of H1 and H2 phases.On the other hand,they enhance the lattice oxygen stability because of the strong Ti-O and Zr-O bonds,inhibiting the undesired H3 phase transition and lattice oxygen loss,improving the bulk structure and cathode-electrolyte interface stability.As a result,the Ti/Zr co-doped NM91（NMTZ） exhibits a 91.2% capacity retention rate after 100 cycles,while that of NM91 is only82.9%.Also,the NMTZ displays better rate performance than NM91 with output capacities of 115 and93 mA h g-1at a high current density of 5 C,respectively.Moreover,the designed NMTZ could enable the full battery to deliver an energy density up to 263 W h kg-1,making the ultra-high nickel cobaltfree lithium layered oxide cathode closer to practical applications.

关键词： Lattice oxygen stability Li+/Ni2+ mixing Lithium-ion battery Ti/Zr co-doping Ultra-high nickel cobalt-free cathode